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GPH3/GPH4 Alarm Horn - Buzzer 2-21-130

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The GPH series are low profile, high output, 110dB(A) alarm horns designed as a maintenance free, reliable alternative to solenoid type devices.
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Alarm Horn - Buzzer


The GPH3 is a surface mount version with back box, the GPH4 is a flush mount variant for use in panel mount applications or for use with standard 4" back boxes. Featuring a realistic simulated buzzer sound the GPH, with its low current consumption and high SPL in a robust, fire retardant housing, is suitable for all general signalling applications.


Datasheet Datasheet.pdf
Installation Manual D168-00-001-IS_Issue_C.pdf
UL certifcate of compliance UL_CoC_-_20100823-S7995_GPH3__GPH4.pdf
Russian EAC Declaration of Conformity D-GB.GA05.B.12595-20-24.03.2025.pdf
Declaration of Conformity DC-030_Issue_E_GPH.pdf
Declaration of Conformity UKCA DC-030_Issue_F_GPH.pdf
2D drawing (PDF) SK0166_Issue_B.pdf
2D drawing (PDF) SK0167_Issue_B.pdf
2D drawing (DWG) SK0166_Issue_B.dwg
2D drawing (DWG) SK0167_Issue_B.dwg
3D drawing (STEP) SK166-3D_Issue_B.STEP
3D drawing (STEP) SK167-3D_issue_B.STEP
Hi-res product image 1 (TIFF) 2-21-130_GPH3.tif
Hi-res product image 2 (TIFF) 2-21-130_GPH4.tif
Lo-res product image 1 (JPG) 2-21-130_GPH3.jpg
Lo-res product image 2 (JPG) 2-21-130_GPH4.jpg
Russian EAC Declaration of Conformity D-GB.GA05.B.12595-20-24.03.2025.pdf


  • Automatic synchronisation on multi-sounder system.
  • Continuously rated.
  • Stainless steel fixings.
  • Duplicate cable terminations (in & out for daisy-chain installations).


Nominal output: 110dB(A) @ 1m +/- 3dB [101dB(A) @ 10ft/3m]
No. of tones: 3
Stage switching: DC voltage via negative
AC voltage via live supply
Volume control: On board potentiometer
Voltages DC: 10-30V dc/ac
Voltages AC: 40-260V dc/ac
Ingress protection: GPH3: IP66 (UL Type 4/4X/13)
GPH4: IP54 (UL Type 13/3R)
|Housing material:
High impact UL94 V0 (f1) PC
Colour: Grey (RAL7038)
Cable entries: 2 x M20 clearance
Terminals: 22 – 12AWG (0.5-3mm²)
Operating temp: -25 to +55°C [-13° to +131°F]
Storage temp: -40 to +70°C [-40° to +158°F]
Relative humidity: 90% at 20°C [68°F]
Weight: 0.40kg/0.88Ibs
*SPL data +/-3dB(A). Measured at optimum voltage
Tone 1 Electro-mechanical type Buzzer tone
Tone 2 1200/500Hz @ 1Hz – DIN / PFEER P.T.A.P.
Tone 13800/1000Hz @ 7Hz

Current Consumption

Version: Voltage: Current :
10-30V dc/ac 12V dc 52mA
10-30V dc/ac 24V dc 105mA
40-260V dc/ac 48V dc 42mA
10-30V dc/ac 12V ac 50/60Hz 115mA
10-30V dc/ac 24V ac 50Hz 215mA
40-260V dc/ac 48V ac 50/60Hz 68mA
40-260V dc/ac 115V dc 16mA
40-260V dc/ac 230V dc 8mA
40-260V dc/ac 115V ac 50/60Hz 36mA
40-260V dc/ac 230V ac 50/60Hz 18mA

Part Codes

Version Part code:
GPH3S surface mount:
10-30V dc/ac GPH3SEDC024G
40-260V dc/ac GPH3SEAC230G
GPH4F flush mount:
10-30V dc/ac GPH4FEDC024G
40-260V dc/ac GPH4FEAC230G


  • UL & cULus approved: General signalling use.

Tone Table

Stage 1 *WAV file* Frequency Description. Stg 2
T 1 /system/1/assets/files/000/000/424/424/33c1c60f3/original/TF052.WAV Electro-mechanical diaphragm horn sound T 2
T 2 /system/1/assets/files/000/000/386/386/ceb4e488c/original/TF009.WAV 1200/500Hz @ 1Hz – DIN / PFEER P.T.A.P. T 1
T 3 /system/1/assets/files/000/000/392/392/68d5d1294/original/TF029.WAV 800/1000Hz @ 7Hz Sweeping T 2
Country specific or custom tone configurations and alarm frequencies are available upon request.

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